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sammy [17]
3 years ago
12

Special precision bolts are made by another machine. These are for jobs that require more exact measurements. The bolts must be

within 0.01 mm of 8 mm. This is represented by |x – 8| < 0.01.
Write this inequality as a compound inequality without absolute value bars.






Solve the inequality.






Graph the solutions on a number line.






What do the solutions of the inequality mean for the bolt?

Mathematics
1 answer:
kondaur [170]3 years ago
5 0

Answer:

-.01 < x-8 < .01

7.99 < x< 8.01

see attached

The bolts must be greater than 7.99mm and less than 8.01 mm

Step-by-step explanation:

|x – 8| < 0.01

to remove the absolute value bars, we need the positive and negative solutions

x-8 < .01   and x-8 > -.01

-.01 < x-8 < .01


solve

add 8 to each side

-.01 < x-8 < .01

8 + -.01 < x-8+8 < .01 +8

7.99 < x< 8.01

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  1. If Kayla has a red ribbon with length 25  9 m and piece of 5 7 m is cut from it and gave to Sania . Find how much long ribbon left with her?                                                                                                                                                                                                                      
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7 0
3 years ago
A film distribution manager calculates that 4% of the films released are flops. If the manager is correct, what is the probabili
Anit [1.1K]

Answer:

9.34%

Step-by-step explanation:

p = 4%, or 0.04

n = Sample size = 667

u = Expected value = n * p = 667 * 0.04 = 26.68

SD = Standard deviation = \sqrt{np(1-p)}  =\sqrt{667*0.04*(1-0.04)} = 5.06

Now, the question is if the manager is correct, what is the probability that the proportion of flops in a sample of 667 released films would be greater than 5%?

This statement implies that the p-vlaue of Z when X = 5% * 667 = 33.35

Since,

Z = (X - u) / SD

We have;

Z = (33.35 - 26.68) / 5.06

Z = 1.32

From the Z-table, the p-value of 1.32 is 0.9066

1 - 0.9066 = 0.0934, or 9.34%

Therefore, the probability that the proportion of flops in a sample of 667 released films would be greater than 5% is 9.34%.

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3 years ago
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